902 OLD RED SANDSTONE PLANTS FROM RHYNIE CHERT BED, ABERDEENSHIRE. 
Fig. 107. Immature vesicle (bulbil?), beside another only partially shown, with short protrusions from a 
possible basal node. x 100. (No. 2475.) 
Fig. 108. Specimen associated with vesicles like those in the preceding figures; it shows an internodal 
cell and two whorls of branches at the lower and upper nodes, x 100. (No. 2476.) 
Plate X. 
Nematophyton Taiti. 
Fig. 109. Portion of a fragment of Nematophyton Taiti showing the wide tubular elements and two of 
the “medullary spots” (m.s.). x 50. (No. 2523.) 
Fig. 110. View of a portion of the preceding specimen, x 100. (No. 2523.) 
Fig. 111. A portion showing cross sections of the large tubes. x 250. (No. 2523.) 
Fig. 112. Large tubes bounding a “medullary spot” (m.s.) packed with the narrow tubes.' x 250. 
(No. 2523.) 
Fig. 113. View of one of the sections of the second fragment which shows the peripheral tissues. x 30. 
(No. 2525.) 
Fig. 114. Portion of the other section of this specimen. x 50. (No. 2526.) 
Fig. 115. Portion of fig. 113 showing the inner tubes and the base of the peripheral zone, x 50. 
(No. 2525.) 
Fig 116. Portion of the preceding section showing the inner tubes and their relation to medullary spots, 
x 100. (No. 2525.) 
Fig. 117. Some of the fine vertical tubes showing the spiral marking of the inner layer of the wall, 
x 250. (No. 2523.) 
Fig. 118. One of the inner tubes showing the spiral marking clearly and at places its relation to the 
outer thick portion of the wall of the tube that has not wholly disappeared, x 250. (No. 2525.) 
We again gratefully acknowledge our indebtedness to the Executive Committee of the Carnegie Trust 
for a grant to defray the cost of the plates illustrating this Memoir. 
(All the figured specimens in this series of Memoirs are in the collection of Dr R. Kidston.) 
